Backflow devices are required for residential irrigation and fire lines.
Reduced Pressure Zone (RPZ) and Pressure Vacuum Breaker (PVB) backflow devices are used for residential lawn irrigation.
Lawn irrigation is considered high hazard.
No double check backflow devices are allowed for this type of service.

Residential backflow devices must be tested annually.
The City sends letters to notify residents when the annual backflow test is due.
The backflow test must be completed by a certified tester and a copy of the certified test report must be provided to the City.
The City of Olathe verifies that the tester is certified and that the test is valid.
Contact Customer Service at 913-971-9311 for additional information.